Trigger mechanism for automatic firearms.



E. G. REISING.

TRIGGER MECHANESM FOR AUTOMATIC FIREARMS. APPUCATION. FILED 1'UNEI9. 1915.

1 1 83 1 1 5 Patented May 16, 1916.

W I TNESSES:

w BY

4 A TTORNEY EUGENE G. REISING,

OF HARTFORD, CONNECTICUT.

TRIGGER MECHANISM FOR AUTOMATIC FIREARMS.

Application filed June 19, 1915.

To all whom it may concern.

Be. it known that I, EUGENE G, Rnrsmo, a citizen of the United States, and a resident of Hartford, in the countv of Hartford and State of Connecticut, have invented a new and Improved Trigger Mechanism for Automatic Firearms, of which the following is a specification.

My invention relates to the class of devices above named, and an object of my invention, among others, is to prevent unintentional discharge of the firearm.

One form of device embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings. in which I gure 1 is a view in side elevation of a portion of a firearm embodying my invention, with parts broken away to show construction, the trigger being shown in its operative position. Fig. 2 is a fragmentary view in section through the handle of said firearm, the trigger being shown in its inoperative position. Fig. 3 is a detail perspective view showing the relative. inoperative positions of the trigger and sear and of the trigger-,sear and detent springs. Fig.4is a. fragmentary view of a firearm embodying the invention in a slightly different form.

In the accompanying drawings the numeral 5 indicates the handle of a firearm embodying my invention, (5 the trigger guard, 7 the trigger, 8 the barrel, 9 the receiver, 10 the hammer, 11 the sear, 12 the main spring and 13 the magazine, all of which, except in combination with other parts to be hereinafter described, may be of ordinary and well known construction. The trigger is provided with a loop 14 extending backwardly and shaped to permit the magazine 13 to be inserted through it, the rear end of the loop constituting a cross bar 15 having a beveled under surface 16. \Vhen the. loop 14 and the cross bar 15 thereon are in their normal position, the latter, as the trigger 7 is moved back, will be pressed against the sear 11, and upon the application of sufficient, force will disengage the sear from the hammer 10.

In automatic firearms of struction the magazine'isojectcd from the handle immediately upon the last cartridge being removed therefrom, whichcartridge, however, is present in the barrel in condition for discharge. It is, however, quite Specification of Letters Patent.

common COH- Patented May 16, 191

Serial No. 35,069.

impossible at times to determine whether or not such cartridge may have been discharged, and it is to avoid accident from this cause that I have made the invention forming the subject matter of this application, which improvement will prevent ward movement of the trigger from operating to disengage the sear from the hammer, and this is accomplished by mechanism as follows: A detent 17 is positioned above the cross bar 15, this detentbeing inclined at an angle to the direction of movement of the trigger loop 14, and said detent is of such length that its end 18 will be located in the path of movement of the magazine 13 when itisinserted inthe handle. Thisend 18 is preferably curved so that it will permit the magazine to pass it, the latter, however, moving the detent backward tothe posi-- tion shown in Fig. 1. The detentis normally pressed forward, or toward the magazine, in the form of construction herein shown it constituting an integral part of a spring 19. When this detent is in the position shown in Figs. 2 and 3, if the trigger be moved backwardly the bar 15 will be. cannned downwardly so that it cannot. touch the sear 11 but will pass underneath it, and it will be noted, by referring to Fig. 1, that when the magazine is in place and the detent is in its backward position the bar 15 may engage the sear to disengage it from the hammer. As the magazine is removed and the detent is forced forward its inclined under or cam surface 20 will move the cross bar 15 downwardly into its inoperative position above described.

In the preferred form of construction the detent spring 19, a scar spring 21 and a trigger spring 22 are all formed integral with each other, being in the shape of fingers projecting from a base plate 23. The trigger spring 22 presses with its end againstthe beveled surface 16 of the bar 15 thus operating to force the bar 15 upwardly into position to touch the sear-Whenever this movement is permitted by the detent 17.

\Vhilc I have shown and described herein a satisfactory arrangement of parts for carrying out my purpose, these may be departed from to a greater or lesser degree and yet be within the spirit and intent of the invention.

In order that the trigger bar may be placed in its inope, ttive position whenever the iagazine is no fully 111 place I provide any backdi position. and means for forring a projection 24 on the back edge of the n'iagazine, and as shown in Fig. 4 of the drawings. against wlnrh the end 18 of the detent rests when the n'iagazine is fully in plaee. Immediately upon the magazine be ing moved from thia position the detent will travel forward and place the trigg r bar in inoperative position while the magazine vet contained within the handle.

1 claim:

1. A firearm inf-hiding a handle having a ine ehainlier. a hammer and a sear.

ger. a ro; liar operativelv Connected with the trigger. a detent having a (11111 surface to engage the rross bar and determine the (ler-nt int the path of movement of the naiganv into the handle.

.a firearm inrluding a handle having a magazine t-lannlair. a hammer and a sear, a trigger. a cross, bar having a heveled aurfaee. means to engage said anrfare to force the bill in one dirertion, a detent to engage said har and having an inclined sur'l'aee to for-3e said har in the opposite direz-tion. and means for moving the detent into the magazine ehamher to inoperativelv position said or: bar as the magazine is removed from said thai'nher.

'3. f firearm inrloding a handle having a magazine rhainla-r. a hammer and a sear, a trigger. a rross har having a heveled under anrfare. means to engage said under surfare to torre the cross har upwardly, a detent overlying the eross har and having an inelined surfaee to forre said bar down war lly. and nit-aim for moving the detent into the magazine rhamher to inoperatively pl, m aaid eroaa har as the magazine removed from said whamher.

A firearm inrluding a handle having a. magazine rhaniher. a hammer and a sear,

; 01. a r-roas har operatively connected with the trigger. and means upon the maga, zine to control the position of the cross bar innnediately upon movementof the magazine from its normal position.

5. firearm int-hiding a handle having a magazine rhamher. a hammer and a sear, a trigger. a rross har operatively connected with the trigger. means operative by movement of the magazine within its chamber to rontrol the position of said CI'OSS bar, and a projeetion upon the magazine to engage said operative means and Control its position upon movement of the magazine from its normal position.

6. A firearm including a handle having a magazine chamber. a hammer and :1 Hear, a trigger. a rross har operativelv eonnet'ted with the trigger, a spring including a base. having two arm projerting upwardly. one of \\'lil('li engages said rross bar to force it toward the sear. and the other eonstituting a detent overlying the rross bar and having an inelined snrfaee to fort-e said har downwart-ll and means for in the path of inward movement of the magazine into its rhaniher.

T. firearm int-hiding a handle having a magazine rhamher. a hammer and a sear, a trigger. a (Toss har operativelv eonneeted with the trigger. a haae plate. a spring finger integral with and projerting from the hase plate to engage the eroaa l)2H to foree it toward the sear. another spring linger integral. with said plate and projeeting upwardly therefrom to engage the sear to operate it, and a third spring finger integral with and projecting upwardly from said plate and having an inelined surface to engage the up per side of the cross bar to force it downward. said finger being normally located in the path of mo rement of the magazine when inserted in its (-haniher.

l )ll( i E i Y E G. REISING.

locating the :letent- 

